Index: firmware/App/Controllers/BloodFlow.c
===================================================================
diff -u -rd4bc221d9817b488c2dcd00868386d7036a5c9a1 -rb20421d84b9049977c04f4752f4fc5697425f25c
--- firmware/App/Controllers/BloodFlow.c	(.../BloodFlow.c)	(revision d4bc221d9817b488c2dcd00868386d7036a5c9a1)
+++ firmware/App/Controllers/BloodFlow.c	(.../BloodFlow.c)	(revision b20421d84b9049977c04f4752f4fc5697425f25c)
@@ -1651,7 +1651,7 @@
 
     if ( TRUE == isTestingActivated() )
     {
-        setBloodPumpTargetFlowRate( (S32)BP_ML_PER_MIN_FROM_PWM( value ), MOTOR_DIR_FORWARD, PUMP_CONTROL_MODE_OPEN_LOOP );
+        setBloodPumpTargetFlowRate( (U32)BP_ML_PER_MIN_FROM_PWM( value ), MOTOR_DIR_FORWARD, PUMP_CONTROL_MODE_OPEN_LOOP );
         result = TRUE;
     }